This is an unrolled version of the thread below. If you find the article helpful please consider showing your support by liking/retweeting 🤓

https://twitter.com/ThorHartvigsen/status/1625152292520624129


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The thread will aim to break down complex topics in an easy to understand way. It'll cover:

â—† Important terminology

â—† Arbitrum

â—† Optimism

â—† Polygon

â—† zkSync

Terminology

Let's first define modularity. A blockchain can be divided into 4 parts.

Current blockchains (Ethereum, Solana, etc.) are monolithic i.e. handles all 4 aspects.

A modular blockchain is a chain that outsources 1 or more of these layers to an external chain.

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An Ethereum rollup (layer 2) is a separate blockchain that extends and inherits the security from Ethereum.